You've had plenty to read so far, so we'll get right into some flights. All flights in this section end with Localizer Approaches, with no vertical guidance information provided. Thus they all are non-precision approaches, and Minimum Descent Altitudes, MDAs, will apply.
Some pilots call non-precision approaches "Dive and Drive"—"Dive" to the MDA and then you're so low that you feel you could almost "Drive" to the runway.
Five practice flights provide lots of variety on types of Localizer approaches.
Most of the skills learned when flying VOR approaches are applicable to Localizer approaches.
The biggest difference, of course, is the four-times increase in sensitivity when tracking a localizer. Off course by one degree is a two-dot deflection on the Indicator gauge. A half-degree misalignment is one dot.
How do you correct a heading that is misaligned by one-half degree? You "kick it over." Yes, that means rudder pedals. And you kick the pedal on the side that you want to turn. Right turn. Right pedal. You simply don't bank a plane when you want to make a 1° heading adjustment.
One of the joys of flying the MS flight simulators are that the aircraft are generally very stable on heading. It's too bad the same can't be said for altitude stability. So once you have established your heading, your aircraft is likely to stay where you want it all the way down the pipe to the runway.
A joystick is the least satisfactory control when flying a localizer or ILS. It is very difficult to make small changes with a joystick. They are super in combat situations when you want to roll out of a tough situation, but not ideal for holding the localizer.
A yoke is the next step up from a joystick. It's easier to make small heading corrections with it than a joystick. The realism is more satisfying, too.
And, as mentioned, rudder pedals with a yoke is the best possible choice. Now you have the same control over your flight that a pilot flying the big iron has (and the same control as one who flies the small iron, too).
Something to think about when your tax refund arrives and you're puzzled about how to spend it.
Localizer approaches are very similar to VOR approaches with a few slight differences. The most noticeable will be the increased sensitivity of the needle on the localizer indicator. As already mentioned, it is four times as sensitive as when the Nav receiver is tuned to a VOR signal.
Also recall that the OBS setting has no impact on the needle. So get into the habit of setting the OBS to the localizer approach course as a reminder of where you are going. It will be one less thing to write down or remember and it is always in front of you.
This first flight is easy and enjoyable. The flight begins at Stewart Int'l airport, KSWF, in Newburgh, N.Y. with a destination of Essex Co. airport, KCDW, in Caldwell, N.J. The localizer approach is to Runway 22. Click on the image above to download the flight-information package, swf-cdw.zip.
The zip-file includes the IFR chart, the approach plate for LOC Rwy 22 at Caldwell, and this text description of the flight.
We proceed south-bound from Stewart, tracking to the Teterboro VOR, but intersect the localizer to Caldwell's Runway 22., before reaching Teterboro. We turn right to track inbound to Caldwell with a straight-in landing to Runway 22. We must pass a VOR intersection after the FAF before descending below 800 ft.
As usual, do nothing until you have gone through the step-by-step details of the flight with this text and your charts. Only by doing this will you both understand the purpose of each step, but you will visualize them in your mind, a critical part of instrument flight.
NOTE: Fly the Instrument Approach portion with your Nav-2 Receiver for better needle visibility.
Set the flight simulator weather conditions to 1100 ft overcast, cloud tops at 10,000 ft., and two miles visibility. The wind is calm. Move the aircraft to Stewart's Runway 16, airport KSWF, and retract the flaps to 0°. Tune the Nav-1 receiver to the Teterboro VOR, 108.4 MHz., ident TEB. Set the VOR-1 OBS to the vicinity of 190°. You will center the needle with the OBS after takeoff and track that radial until intercepting Caldwell's localizer. Fly the first leg with Nav-1. Tune the Nav-2 receiver to Caldwell's localizer, 109.35 MHz., ident I-CDW.
Manchester, N.H. to Beverly, Mass. with localizer approach to Runway 16. Click the image to access the complete flight-information package.
This flight is somewhat shorter than the first flight but a little busier during the final approach. The flight begins at Manchester airport, KMHT, in Manchester, N.H. with a destination of Beverly, Massachusetts, KBVY. The localizer approach is to Runway 16. Click on the image above to download the flight-information package, mht-bvy.zip.
The zip-file includes the IFR chart, the approach plate for LOC Rwy 16 at Beverly, and this text description of the flight.
We proceed south-east bound from Manchester to the Lawrence VOR, then intersect the localizer to Beverly's Runway 16., making a right turn to track inbound to the airport with a straight-in landing to Runway 16. A VOR intersection is the FAF for this approach.
As usual, do nothing until you have gone through the step-by-step details of the flight with this text and your charts. Only by doing this will you both understand the purpose of each step, but you will visualize them in your mind, a critical part of instrument flight.
If you stay on course with a conventional localizer approach it will roll you down the centerline of the runway. That's why Cat II and Cat III ILS approaches are possible.
The LDA is the same as a localizer, but off-set from the runway heading. It provides course guidance down to a point from which you can proceed to the airport by visual references. Terrain features generally force the installation of an LDA approach system; it's the skyscraper, or 1000-ft. TV tower, or granite hill on the normal approach path that prevents using the conventional localizer.
This next flight culminates with an LDA approach. Think of it as one more way to keep final approaches from becoming too boring. It's very short and begins at the Chester, Connecticut, airport, 3B9, KSNC in FSX, where you earlier began a flight leading to a VOR approach. We're heading in a different direction this time, to the Hartford-Brainard airport, KHFD, in Hartford, Connecticut.
The LDA approach at Brainard is to Runway 2. Click on the image above to download the flight-information package, chstr-hfd.zip. The zip-file includes the IFR chart, the approach plate for LDA Rwy 2 at Hartford-Brainard, and this text description of the flight.
The flight could hardly be simpler. We proceed northwest, make an easy intercept of the Runway 2 localizer into Brainard. After the FAF we cannot descend below the MDA until passing the Danns intersection, even if the field is in sight. Assume that this flight is under radar control, allowing the direct route to an intercept of the localizer.
Note: You may wish to fly this LDA Approach as if there were no radar vectors available. In that case you would be required to fly the PUBLISHED LDA Rwy 2 approach. On an Instrument Approach Plate the published approach is depicted by a bold line. Thus your LDA Rwy 2 Approach would include entry into the holding pattern with a right turn at the HF LOM and then one circuit around the racetrack. This also provides the opportunity to nail down the WCA for the inbound leg. Thanks to Burt Stevens for pointing out this requirement if not under radar control.
As usual, do nothing until you have gone through the step-by-step details of the flight with this text and your charts. Only by doing this will you both understand the purpose of each step, but you will visualize them in your mind, a critical part of instrument flight.
Remember, this is an LDA approach, Localizer-type Directional Aid, and the approach path is not lined up with the runway. A right turn is necessary upon reaching the runway to land. Going straight, without the turn, will bring you down onto the taxiway and into the control tower, a rather unsatisfactory ending to a good IFR approach.
It's time to notch up the excitement a little. This flight has several new aspects: the Localizer back course must be flown to set up the approach, a procedure turn is needed to get turned around, and it all ends with a localizer approach to Runway 5, then circling around to land on Runway 23. Oh yes, and a climbing 360° turn above the Lebanon airport to gain some altitude before heading off toward the destination airport.
The flight begins at Lebanon Muni airport, KLEB, Lebanon, New Hampshire, with a destination of Hartness State airport, KVSF, Springfield, Vermont. A localizer approach to Runway 5 and circling to land at Runway 23 ends it all. Click on the image above to download the flight-information package, leb-vsf.zip.
The zip-file includes the IFR chart, the approach plate for LOC-A at Springfield, and this text description of the flight.
Recall that if an approach plate name ends in a letter, like LOC-A, rather than a runway number, then a circling approach is required. Looking at Springfield's LOC-A approach plate, you will notice that the localizer takes you right down the throat of Runway 5; a 050° localizer course to Runway 5 which is aligned to 050°. So what's the problem with a straight-in approach to Runway 5?
Your elevation above the runway threshold is the problem. The field elevation is 577 ft. and the MDA is 1660 ft., nearly 1100 ft, above the end of the runway. That's too high to safely descend and land, thus a circling approach is called for.
We proceed south-bound from Lebanon Muni, intercept Springfield airport's Localizer and then fly over the Springfield airport. We fly outbound on the localizer and enter a standard left procedure turn three minutes after passing the SXD NDB. We then return to the airport on the localizer, with SXD NDB the FAF for the approach. Descend to the MDA, circle the airport on sighting it, and land on Runway 23.
As usual, do nothing until you have gone through the step-by-step details of the flight with this text and your charts. Only by doing this will you both understand the purpose of each step, but you will visualize them in your mind, a critical part of instrument flight.
When your Nav-2 receiver picks up the Springfield Localizer you will be flying on the back course. This localizer is set up to guide you on a 050° heading to the vicinity of Runway 5 for the approach. But you will be tracking the localizer in the opposite direction, on a 230° heading. THE LOCALIZER NEEDLE OPERATES IN THE REVERSE DIRECTION WHEN YOU FLY THE BACK COURSE OF A LOCALIZER.
Instead of turning toward the needle if you drift off course, on the back course you must turn away from the needle.
The localizer antenna array is located at the far end of the runway, away from the approaching aircraft. Its antennas are arranged and manufactured in such a way to transmit a narrow signal on the runway approach path. That localizer signal is so accurate that with its guidance, along with the glide slope signal, an aircraft can safely land when the visibility is zero and when the ceiling is zero.
However, the Localizer antenna array also radiates a narrow signal beam in the opposite direction of the approach path. That signal is called the Localizer Back Course.
A prime advantage of the Back Course is that the airport gets it for free. It need only be tested and certified to become available to pilots "coming in from the other direction." It is an excellent alternative to a circling approach. As you will see in the next flight, approach plates are published specifically for the localizer back course.
Too many pilots shy away from a back course approach because of the reverse sensing of the needle. On the back course, one must correct drift with a turn away from the needle. Keep your wits about you, though, and you will quickly master the reverse sensing needle.
The Back Course localizer approach is a non-precision approach. There is no glide-path guidance with it. Glide-path signals from the front course may be received while on the back course, but you should ignore them.
Although a back course localizer approach is similar to a VOR approach, it has several advantages over a VOR approach.
You'll enjoy the variety of a Back Course approach.
This may be your last opportunity to fly a back course approach. The FAA is decommissioning these sort of approaches and replacing them with GPS approaches. Microsoft uses the latest FAA data base when releasing new versions of Flight Simulator. The Back Course approach to Runway 23 of New Bedford, KEWB, was the only one listed in the New England book of approach plates.
We begin this last localizer-approach flight at 3B2 (although note from the approach plate that it is now KGHG), Marshfield Municipal Airport, in Marshfield, Mass. It’s a short flight, only 29 nm, but this back course approach has a 3.55° approach angle to New Bedford’s Runway 23, steeper than the normal 3.00°. We also provide you with a comfortable 30° intercept of the back course signal.
Because this is such a short flight, your “cruise” altitude will be 2000 ft, the initial approach altitude for New Bedford’s Localizer back course approach to Runway 23.
You will depart from Marshfield’s Rwy 24, maintain Rwy hdg until your ADF points 205° to FFF NDB, then fly to FFF NDB on the 205° bearing and on to the 30° intercept of the back course localizer.
Click on the image above to download the flight-information package, 3b2-ebw.zip. That zip-file includes the IFR chart, the approach plate for LOC-BC Rwy 23 at New Bedford, and this text description of the flight.
As usual, do nothing until you have gone through the step-by-step details of the flight with this text and your charts. Only by doing this will you both understand the purpose of each step, but you will visualize them in your mind, a critical part of instrument flight.
This is the end of the localizer approaches. You've flown five of them and your last ones should have been pretty good. With this experience behind you, go back and fly the five approaches one more time. You'll be pleased at how well you do.
The next piece in the ILS approach is flying the Glide Slope. Click the Flying the Glide Slope button below to get started.
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